How to go to Jeju Island from Seoul and Busan by flight

Hi guys,
I would like to introduce the cheapest way to buy flight tickets to Jeju island.
This post is for people who want to depart from Seoul and Busan.
Generally, most flights to Jeju leave from Gimpo airport and it isn`t that far from central Seoul. But if you want, you can find some flights leaving from Inchoen airport. The flights from Busan leave from Gimhae airport.

Anyway, there are several cheap flights. If you book early, you can get a discount - a return might be 80,000 won (if you book a month in advance). Before you book these flights, you should be aware that these flights are cheaper than Asiana, or Korean Airlines but they don`t serve drinks.

1)Jeju air - you can find language selections on the right top of the website.
http://www.jejuair.net

2)Jin Air - they do promotion tickets quite often.
http://www.jinair.com/Language/ENG/

3)Air Busan
http://www.airbusan.com/AB/airbusan/english/main.jsp?loc=en

4)Eastarjet
http://www.eastarjet.com/book/index.htm?lang=en

Hope you can save your budget and enjoy the trip in Jeju island!